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प्रश्न
Write a short answer.
How are the bones of birds different from those of other vertebrates?
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उत्तर
The bones of birds have large air cavities (are hollow) and hence are light. This enables them to fly. On the other hand, bones of other vertebrates are dense and solid and form a _ heavy skeleton.
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संबंधित प्रश्न
Write the characteristics of class Aves with reference to their body covering and jaws.
Categorize the following animals under their appropriate columns of classification
| Animals | ||||
| Dog | Grasshopper | Rat | Scorpin | Toad |
| Butterfly | Lizzard | Turtle | Frog | Bat |
| Snail | Honey bee | Pigeon | Liverfluke | Leech |
| Cattle | snake | Rohu | Parrot | Ascaris |
| Earthworm | Cow | Rabbit | Monkey | Elephant |
|
Classification: |
||||
| Worms | Molluscs | Fishes | Amphibians | Reptiles |
| Birds | Mammals |
Fill in the blank.
................. have three pairs of jointed legs.
Fill in the blank.
The backbone of vertebrates is made up of a number of small bones called .....................
Differentiate between
radially symmetrical and bilaterally symmetrical body
Answer in detail.
List four characteristics of reptiles.
Mention any one major similarity and one major difference in the following pairs of an animal:
Bat and Pigeon
Which one is the most striking or (common) character of the vertebrates?
Paramecium is a protista because of its ______.
The notochord extends throughout the entire length of the body is ______.
